Carton printing plate features

Carton printing plate is divided into two categories: metal and non-metal. The commonly used processes mainly involve gravure, flexo (embossing) and plain printing. Due to the different characteristics of the printing plate, the printing effect and production cost are also different. .

Gravure printing features

The gravure printing plate is made of steel roller material (seamless steel pipe or coil plate) through electroplating, electric carving and other processing techniques. The gravure printing process equipment has high investment, the plate making process is complicated, the plate making cost is high, and the plate changing operation is also troublesome. , but there are still some pollution problems. However, the gravure ink product is thick and uniform, the print product is rich in layers, and the texture is strong. The print ink has a fast drying speed. In addition, it has a high printing speed, a relatively stable printing ink quality, and is not likely to produce printing color difference and printing plate resistance. The advantage of higher printing rate, if used for printing a large number of packaging products such as electronics, medicine, food and cigarettes, can reduce production costs.

Plain printing process PS version features

The base material of the PS printing plate of the lithography process is aluminum, and the plate material is relatively brittle and easily deformed and fractured. However, its hydrophilic and lipophilic properties are relatively good, and its dual nature is closer. As the surface of aluminum has a dense oxide film, it has a certain degree of chemical stability, and has a certain degree of hardness and wear resistance. After the process, its hydrophilicity and lipophilicity will be better. PS version is currently the main printing plate for pre-printed carton. Due to its simple and rapid plate making process, the plate loading operation is very convenient. It can print solid version, line version, and print fine textured version, and the print reproduction effect is good, the printing price is relatively cheap, widely used in printing paper box and paper box and other packaging products.

Rubber plate features

The rubber plate is a common plate material for a flexographic printing process. Because of its soft material, it is widely used for the direct printing of corrugated cardboard. The main materials of the rubber plate are natural rubber and synthetic rubber. The plate making method includes manual engraving, laser engraving and casting plate making. When using a rubber plate, attention should be paid to its printability. For example, from the standpoint of the ink receptivity, ink receptivity, covering power, and reproducibility of rubber, water-based inks are used for printing, and natural rubber plates are used in comparison with synthetic rubber plates. Material is better. Butyl rubber plates are better suited for solvent-based inks. Nitrile rubber plates should avoid the use of solvent-based inks to prevent the plates from being corroded by solvents. The rubber plate can print substrates with rough surface, and can print on materials with hard texture and have high resistance to printing. However, it has the disadvantage of being easily deformed, so it is not suitable for printing high-precision products.

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